Htirst



Patented Dec. 5, 1922.

UNITED A `rwares SYDNEY I. PEEscorr, Aor NEW PATENT ori-ica WHEEL.

Application filed February 24, 1922. Serial No. 538,867.

To all whom t may concern: l

Be it known that we, SYDNEY I. PREsoo'rfr and FRANCIS J. RUMMLER, citizens of the United States, respectively, residing in the city, county, and Stateof New York, and the town of Lyndhurst, county of Bergen,

and State of New Jersey, have invented a new and useful Improvement in Wheels, of which the following is a specification.

This invention relates to lan invention in wheels, particularly of the type disclosed in our co-pending application, filed February 13, 1922, Serial No. 536043, and the main object of the invention is the production of a wheel having improved means for firmly seating a demountable rim on the wheel body and whereby certain stresses developed in road use are more evenly distributed in that part of the wheel body which directly receives road shocks. With this and other objectsnot specifically mentioned in view, the invention consists in certain constructions which will be hereinafter fully described and then specifically set forth in the claims hereunto appended.

In the accompanying drawing, which forms a part of this specification and in which like characters of reference indicate the same or like parts, the figure is acrosssectional view of a wheel constructed in accordance with the invention, the body vand wheel holding devices being'omitted.

.lin carrying the invention into effect, vthere is provided a wheel body and rim, one of which is provided with a surface engaging the other, which surface has the contour of the periphery of a spheroidal frustum or is otherwise transversely curvedA ln the best constructions, the body and the rim have contacting surfaces each of which has the contour of the periphery of a spheroidal frustum, and the center of this spheroidal frustum lies at the intersection of the wheel axis and the plane of the inboard edges of rim supporting seat 2 having the contour vof the periphery of a spheroidal frustum the center of which liesat the intersection of the wheel axis, indicated in the drawing by the line W-A, and the plane of the inboard edges of said seat, whichl plane is indicated by the line P-IE. The line R in the drawing indicates the radius of the sphere of which the spheroidal frustum is a part. Adjacent its inboard edge, the seat 2 is reversely bent at 3 to stiffen tl e structure.

Engaging the seat 2 is a rim provided with a seat-engaging surfaced having the contour of the periphery of a spheroidal frustum and reversely bent at 5, so that the contacting surfaces of the body and the rim have the contour of the periphery of a spheroidal frustum reversely bent adjacent. their inboard edges, the center of this yfrustum lying at the intersection of the wheel axis and the plane of the inboard edges of said surfaces.

The construction above described provides separable body and rim elements having broad engaging surfaces which more efficiently distribute the stresses developed, prevent the two elements from being jammed together tight enough to prevent easy separation, and provide for eflicient seating notwithstanding the tolerances required in manufacture.

Changes and variations within the scope of the claims may be made in the structure by means of which the invention is carried into effect. The invention therefore is not to be restricted to the precise details of the structure shown and described.

What is claimed is:

l. A wheel comprising a body and a rim the contacting surfaces of which have the contour of the periphery of a spheroidal frustum the center of which lies in the wheel axis inboard from the rim seat.

2. A wheel comprising a body and a rim the contacting surfaces of which have the contour of the periphery of a spheroidal frustum and are reversely bent adjacent their inboard edges, the center of said frustum lying in the wheel axis inboard from the rim seat.

r3. A wheel comprising a body and a rim the contacting surfaces of which have the contour of the periphery of a spheroidal tour of the periphery of :i spheroidal rusf..

tum the center of which lies in the wheel axis inboard from the rim seat, and ariiny engaging said seat.

5. A Wheel comprising a. dise body. pro-vr vided with an integral broad rim supporting'l seat having the contour of the periphery ofu spheroidal frustuni the Center of' which lies in the Wheel axlsrnboard from the run seat, and a riin engaging said seat.

6. A Wheel comprising a body provided with a rim supporting seat, and L rim provided with a. seat engaging sur-face having the contour of the periphery of a spheroidal frnsturn the center of which lies in the Wheel axisvinboard from the riin seat.

"7. A Wheel comprising a body and a riin the contacting surfaces of Which are transversely Curved approximately about a center lying in thezwheelaxis inboard from the rim seat.

In testimony whereof, We have signed. our names to this specification.

SYDNEY I, PRESCGTT. FRANCIS J. 'RUMMLER 

